Towels Smell Sour After Washing? Causes and Fixes

Quick answer: If towels smell sour after washing, start with trapped body soil, damp waiting time, detergent residue, and the washer itself. Tide links sour smells to leftover body soils and wet towels left bunched up; GE Appliances links washer odors to excess detergent and residue. Rewash with correctly measured detergent, rinse thoroughly, and dry completely before storing.

Match the smell to your routine before adding products. Downy says residues can release odor again when towels get wet; LG identifies detergent buildup and neglected washer maintenance as odor sources.

Find the cause before washing again

Symptom	Possible cause	What to do
Sour after sitting in the washer	Tide says warm, damp, bunched-up towels develop mildew smells.	Rewash, then transfer promptly to the dryer or drying rack.
Stiff towels with lingering odor	Downy identifies trapped soils, detergent, and mineral buildup.	Check detergent dosing; use the washer’s extra-rinse option if needed.
Soft towels that absorb poorly	Maytag says softener can reduce absorbency and excess amounts can leave residue.	Skip softener during the reset and measure detergent accurately.
The empty washer also smells	GE Appliances identifies soap and softener residue in front-load washers.	Clean the gasket, dispenser, and tub following your manual.
A tightly packed load washes poorly	Maytag warns overloading interferes with cleaning and rinsing.	Split the load and follow the machine’s capacity guidance.
Odor persists with cold-only washes	LG says detergent may not completely dissolve in cold water.	Inspect the dispenser; review detergent and temperature instructions.
Fresh after drying, musty after storage	Tide warns against storing towels before they are completely dry.	Finish drying before folding or putting towels away.

Samsung says Extra Rinse more thoroughly removes additives and perfumes. These are troubleshooting clues, not proof of one cause.

How to get the sour smell out of towels

This reset combines manufacturer guidance on washing, rinsing, and drying. It is not a homemade chemical stripping recipe.

Read the towel label first. Tide says care labels determine washing temperature, bleach restrictions, and drying method. Separate towels by compatible colors and care requirements. Tide also recommends washing and drying heavy items such as towels separately from lighter clothing for even drying.
Clean a smelly washer first. GE Appliances says soap and fabric-softener residue in the tub can cause odor. If the empty drum smells, follow the washer section below before rewashing towels.
Reduce the load and measure detergent. Maytag warns against overloading. Tide says dosing depends on load size, soil, water hardness, and detergent type. Follow the package directions. For front-load washers, GE Appliances recommends liquid HE detergent at the detergent manufacturer’s stated amount.
Leave out fabric softener. Maytag advises avoiding it on towels when maximum absorbency is desired. Use detergent without softener for this reset.
Choose a suitable full wash cycle. Tide lists Normal/Regular for towels and warm water as a towel option, subject to the care label. Samsung also lists Normal and a dedicated Towels cycle on applicable models. If you always wash cold, review that choice when investigating residue, as LG says incomplete detergent dissolution can contribute to buildup. Do not override a cold-only care label.
Rinse remaining additives. Samsung says Extra Rinse more thoroughly removes additives and perfumes; Rinse + Spin can also follow another wash. Use your model’s option when residue is the concern.
Dry promptly and completely. Tide recommends drying towels immediately after washing and storing them only when fully dry. Follow the label for machine drying, or spread towels on a rack or line with room for air circulation.

Downy says detergent overdosing, especially in HE washers, can leave buildup. Use label-based dosing, not an arbitrary rule to halve every dose.

Check the washer itself

Front-loader gasket: GE Appliances recommends regularly checking and cleaning the door gasket, removing trapped objects, and keeping the holes behind it clear. Its guidance permits wiping the gasket with mild detergent and says to wipe cleaning solution away with warm water before using the washer. Follow your model’s instructions rather than pulling components apart.

Dispenser drawer: GE Appliances says detergent and softener can collect in front-load washer drawers and recommends removing residue once or twice a month. LG adds that cold-water detergent may not completely dissolve. Use the manual’s removal and cleaning procedure for your particular drawer.

Clean-washer cycle: GE Appliances recommends monthly tub cleaning for front-load washers; LG likewise recommends a monthly Tub Clean cycle. Use only the cleaner and procedure your manual allows, without towels inside. Instructions differ: Samsung specifically says not to use detergent or bleach in its Pure Cycle. Do not transfer another brand’s cleaning recipe to your machine.

Persistent odor: LG says a clogged drain-pump filter can retain water. Follow the manual’s filter instructions if applicable. LG recommends service if odor continues after multiple tub cleans.

Drying and storage: finish the job

Tide recommends immediate drying to prevent mildew smells. Follow the care label’s dryer instructions. Downy says avoiding dryer overloads allows free tumbling and airflow for even drying.

For line or rack drying, Tide recommends allowing air to circulate and waiting until towels are completely dry before storage. Between showers, hang towels to dry rather than leaving them bunched up. Tide also advises against putting wet towels in the laundry hamper.

Safety notes

Never mix bleach with vinegar or ammonia. Poison Control says vinegar and chlorine bleach release irritating chlorine gas; bleach and ammonia can release chloramine gas.
Do not improvise cleaner combinations. Poison Control advises never mixing household cleaning products and following product-label directions.
Ventilate during washer cleaning. Poison Control recommends ventilation and keeping children and pets away from areas where cleaners are being used. Store cleaners securely.
Respect fabric and machine restrictions. Tide says care labels specify when bleach and tumble drying are allowed. Samsung’s Pure Cycle restriction illustrates why washer-cleaning additives must also match the manual.

Prevention habits that address the cause

Make prompt unloading, complete drying, and hanging between uses your default: these are Tide’s odor-prevention recommendations. Follow the package’s detergent dose for the actual load rather than pouring by eye.

Keep the dispenser and tub on the maintenance schedule your washer manufacturer specifies. For front-load washers, GE Appliances recommends monthly tub cleaning and dispenser residue removal once or twice a month. For towel absorbency, follow Maytag’s advice to avoid softener when maximum water absorption is the priority.

Musty smells often come from moisture that never dries. The same idea applies when a water bottle smells like mildew, and if another appliance is the problem, see our fix for a dishwasher that smells like wet dog.

FAQ

Why do towels smell when wet but seem fine when dry?

Downy calls this “odor bloom”: soils or residues not fully removed during washing release odor again when towels get wet. Revisit detergent dosing, rinsing, and washer maintenance instead of assuming a dry towel’s lack of smell means the problem is resolved.

Does vinegar help sour-smelling towels?

Tide says vinegar can break up mineral deposits and body-soil buildup, but also warns that vinegar with detergent can alter detergent performance. This guide therefore favors the detergent-and-rinse reset, not a vinegar mixture. Poison Control says never combine vinegar with chlorine bleach.

Should fabric softener be stopped on towels?

Maytag recommends avoiding softener on towels when maximum absorbency is desired and warns that exceeding recommended amounts can create residue. Skipping it is a reasonable troubleshooting choice when towels absorb poorly or buildup is suspected.

How often should bath towels be washed?

The American Cleaning Institute recommends washing bath towels after three to five normal uses and hanging them to dry between uses. Its guidance also says towels need to dry before being used again. That normal-use schedule is not a reason to keep using a sour-smelling towel.

To trace odors beyond laundry, see our household odor guide for item-specific cleaning routes and warning signs.

Sources

Last reviewed: October 15, 2026. Always follow your washer manual and towel care labels.